body{
  background: url("https://dumbiee.neocities.org/junkbox/thebest/doom/wall.jpg") fixed center no-repeat #fff;
  background-size: cover;
}

.video{
  background: url("https://dumbiee.neocities.org/junkbox/thebest/doom/frame.png") top center no-repeat;
  background-size: 100% 100%;
  margin: 0;
  position: absolute;
  top: 50%;
  left: 50%;
  -ms-transform: translate(-50%, -50%);
  transform: translate(-50%, -50%);
  width: 988px;
  height: 592px;
  box-shadow: 0 20px 10px rgba(0,0,0,0.5);
}

video{
  width: 575px;
  height: 310px;
  margin: 0;
  position: absolute;
  top: 50%;
  left: 50%;
  -ms-transform: translate(-50%, -50%);
  transform: translate(-50%, -50%);
}